Home / 22,456.06-30,988.38-12,889.33

Finding the Fourth Proportional to 22,456.06, 30,988.38 and 12,889.33

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Solution

The fourth proportional to 22,456.06, 30,988.38 and 12,889.33 is: 17,786.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,456.06 : 30,988.38 = 12,889.33 : x
  2. Step 2: Convert to fraction form
    22,456.06/30,988.38 = 12,889.33/x
  3. Step 3: Cross multiply
    22,456.06x = 30,988.38 × 12,889.33
  4. Step 4: Simplify right side
    22,456.06x = 399,419,455.99
  5. Step 5: Solve for x
    x = 399,419,455.99/22,456.06
  6. Step 6: Final answer
    x = 17,786.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.